These are a couple of issues that may lead to some further research of ethical problems:
-is alcoholism genetically based and does that affect individual accountability?
-fetal alcohol syndrome and the rights of pregnant women
-the higher rate of domestic violence and child abuse in alcoholic environments
-should expensive treatment options (transplant) be readily available to chronic alcoholics?
Good luck with your studies. I don't know about England but here we are so aggressive with anti-smoking campaigns and not enough (in my opinion) anti-alcohol campaigns.